The Fallen Queen — Jane Kindred

Heaven can go to hell.

Until her cousin slaughtered the supernal family, Anazakia's father ruled the Heavens, governing noble Host and Fallen peasants alike. Now Anazakia is the last grand duchess of the House of Arkhangel'sk, and all she wants is to stay alive.

Hunted by Seraph assassins, Anazakia flees Heaven with Fallen thieves-fire demon Vasily and air demon Belphagor, each with their own nefarious agenda- who hide her in the world of Man. The line between vice and virtue is soon blurred, and when Belphagor is imprisoned, the unexpected passion of Vasily warms her through the Russian winter.

Heaven seems a distant dream, but when Anazakia learns the truth behind the celestial coup, Anazakia will have to return to fight for the throne--even if it means saving the man who murdered everyone she loved.